Tap to Pay via SumUp or Stripe

**Is your feature request related to a problem? Please describe.**
I am always frustrated when I need to accept card payments on-site and have to rely on additional hardware such as card readers. This not only incurs extra costs but also adds complexity to the setup and usage process. This is particularly inconvenient for mobile operations or at trade shows where a simpler solution would be highly beneficial. Also the Payment in alf.io would be manual created by the Agent.

**Describe the solution you'd like**
I would like to see the integration of SumUp with TapToPay on both Android and iPhone devices to accept card payments on-site. This would allow customers to make payments directly through the seller's NFC-enabled smartphone without the need for additional hardware. Such a solution would significantly simplify the process of accepting card payments and increase flexibility for sellers.

**Describe alternatives you've considered**
Another option would be to use QR code-based payment solutions, but these are not as widely adopted or user-friendly as TapToPay.

**Additional context**
Integrating SumUp with TapToPay would not only enhance user-friendliness but also reduce costs and logistical challenges for sellers. Additionally, this could increase the acceptance rate of card payments among small and mobile businesses. A screenshot or mockup of a potential user interface could be helpful to illustrate this vision.